Overview:
Fault Code 91 indicates an excessive resistance has been detected between the power supply source (battery or starter) and the Transmission Controller.
Detection:
The fault is detected during power down.
Possible Causes:
1) Vehicle Harness between battery or starter and Transmission Controller.
Shop Talk:
Key off. If the fault is present, the system will automatically detect the problem during system calibration and set the code Inactive. Possible
triggers include corrosion on main battery power and ground.
Eaton Gen 2 (AutoShift) Fault Code: 83 PID: SID 18 FMI: 14 Shift Lever Missing
Eaton Gen 2 (AutoShift) Fault Code: 81 PID: SID 47 FMI: 7 Gear Engagement Detected
Eaton Gen 2 (AutoShift) Fault Code: 74 PID: SID 54 FMI: 12 Failed to Synchronize
Eaton Gen 2 (AutoShift) Fault Code: 74 PID: SID 54 FMI: 10 Failed to Synchronize
Eaton Gen 2 (AutoShift) Fault Code: 74 PID: SID 54 FMI: 7 Failed to Synchronize
Eaton Gen 2 (AutoShift) Fault Code: 73 PID: SID 58 FMI: 7 Failed to Engage Gear
